<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>员工列表</title>
    <style>
        * {
            margin: 0;
            padding: 0;
        }

        body a {
            text-decoration: none;
            color: #0d3a4b;
        }

        .active {
            color: #ffffff;
        }

        .wrap {
            width: 700px;
            height: 500px;
            background-color: skyblue;
            margin: 0 auto;
            position: relative;
        }

        .wrap #table {
            width: 460px;
            border-radius: 12px;
            position: absolute;
            left: 50%;
            top: 160px;
            transform: translateX(-50%);
            box-sizing: border-box;
            overflow: hidden;
        }

        .wrap #table thead {
            width: 100%;
            height: 30px;
            line-height: 30px;
            text-align: center;
            border-top-left-radius: 12px;
            border-top-right-radius: 12px;
            color: #fff;
            background: #4cbfe5;
        }

        .wrap #table thead a {
            color: #fff;
        }

        .wrap #table tbody {
            color: #19c2ff;
        }

        .wrap #table tbody a {
            color: #19c2ff;
        }

        .wrap #table tbody tr {
            background: #fff;
        }

        .ctrl {
            position: absolute;
            left: 200px;
            top: 100px;
        }

        .ctrl div {
            width: 300px;
            line-height: 30px;
            display: flex;
            flex-direction: row;
            justify-content: space-around;
        }

        h1 {
            text-align: center;
            padding-top: 20px;
            color: white;
        }
    </style>
</head>

<body>
    <div class="wrap">
        <h1>员工列表</h1>
        <div class="ctrl">
            <div class="age_sort nu">
                <a href="javascript:;">年龄从小到大</a>
                <a href="javascript:;">年龄从大到小</a>
                <a href="javascript:;" class="active">默认排序</a>
            </div>
            <div class="gender_show">
                <a href="javascript:;">只显示男性</a>
                <a href="javascript:;">只显示女性</a>
                <a href="javascript:;" class="active">默认</a>
            </div>
        </div>
        <table id="table">
            <thead>
                <tr>
                    <th>id</th>
                    <th>姓名</th>
                    <th>年龄</th>
                    <th>性别</th>
                </tr>
            </thead>
            <tbody>
                <tr>
                    <td>0</td>
                    <td>小明</td>
                    <td>24</td>
                    <td>男</td>
                </tr>
            </tbody>
        </table>
    </div>
    <script>
        var data = [
            {
                id: 1,
                name: '小明',
                age: 24,
                gender: '男'
            },
            {
                id: 2,
                name: '小芳',
                age: 30,
                gender: '女'
            },
            {
                id: 3,
                name: '小美',
                age: 31,
                gender: '女'
            },
            {
                id: 4,
                name: '小刚',
                age: 21,
                gender: '男'
            },
            {
                id: 5,
                name: '小琪',
                age: 18,
                gender: '女'
            }
        ];
        // 数据渲染标签
        dataRender(data);
        function dataRender(data) {
            var tbodyEl = document.querySelector('tbody');
            tbodyEl.innerHTML = '';
            data.forEach(function(item) {
                var trEl = document.createElement('tr');
                trEl.innerHTML = `
                    <td>${item.id}</td>
                    <td>${item.name}</td>
                    <td>${item.age}</td>
                    <td>${item.gender}</td>
                    `
                tbodyEl.appendChild(trEl);
            })
        }

        // 定义一个全局的变量来记录每一次点击的index值
        var ageIndex = 2;
        var genderIndex = 2;

        //年龄排序
        var aEl = document.querySelectorAll('.age_sort > a');
        // 排序数组
        var arrSort = [
            function (data) {
                var res = JSON.parse(JSON.stringify(data)); 
                res.sort(function(a, b) {
                    return a.age - b.age;
                })
                return res;
            },
            function (data) {
                var res = JSON.parse(JSON.stringify(data)); 
                res.sort(function(a, b) {
                    return b.age - a.age;
                })
                return res;
            }, 
            function (data) {
                return data;
            }
        ];
        aEl.forEach(function(item, index) {
            item.onclick = function() {
                console.log('点击了');
                
                var res = arrSort[index](data);
                var newRes = genderArr[genderIndex](res);
                dataRender(newRes);
                
                aEl.forEach(function(val, idx) {
                    if(index === idx) {
                        val.classList.add('active')
                    } else {
                        val.classList.remove('active');
                    }
                }) 
                ageIndex = index;
            }
        })
       

        // 性别的筛选
        var aEl1 = document.querySelectorAll('.gender_show > a');
        var genderArr = [function(data) {
            return data.filter(function(item) {
                return item.gender === '男';
            })
        },function(data) {
            return data.filter(function(item) {
                return item.gender === '女';
            })
        },function(data) {
            return data;
        }]
        aEl1.forEach(function(item, index) {
            item.onclick = function() {
                aEl1.forEach(function(val, idx) {
                    val.classList.remove('active')
                }) 
                this.classList.add('active');
                genderIndex = index;
                
                var res = genderArr[index](data);
                var newRes = arrSort[ageIndex](res)
                dataRender(newRes);


            }

        })

    </script>
</body>

</html>